How do i make this work if i have a Push Button on a analog port and push it and want a message to Display Text on a LCD ?or using a pot from 0 to 100 % at 50% turn on a message on the lcd and if the pot gose below 50% the message turns off.?im new to all this so any help would be great

Have you looked into the lcd.display() and lcd.nodisplay() commands? You would send your text to the display and immediately turn it off. Then later, when you sense the push button or potentiometer position, you could turn it on or off as you desire.

Well i came up with this still its not what im affter this using 2 buttons to change { on } { off } messagei want to do this with just one button.?Also has temp reading from input 0.how do i change the message if the temp go over a set point?

Here are some better photos from my phone not the best.well yes i do want to use just one button that was just a test realy. thats one part im trying to do.also i want another message to come on when a pot gose over a set point like ( To High ) message and ( To Low ) ?how would i have the code to toggle between the interrupt code.